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1) Polymorphism and isomorphism in biodegradable polyesters. Pengju Pan, Yoshio Inoue. Progress in Polymer Science 34 (2009) 605¨C640.

2) Solid Mesophases in Semicrystalline Polymers: Structural Analysis by Diffraction Techniques. Finizia Auriemma, Claudio De Rosa, Paolo Corradini. Adv Polym Sci (2005) 181: 1¨C74.

3) On the Strain-Induced Crystalline Phase Changes in Semi-Crystalline
Polymers: Mechanisms and Incidence on the Mechanical Properties. Roland Seguela. Journal of Macromolecular Science. Part C: Polymer Reviews, 45:263¨C287, 2005.

4) Molecular polymorphism and synthetic polymers. A. Danusso. Polymer 1965, 281.

5) structure and morphology of PP. B. Lotz et al. Polymer 1996, 37, 4979.

6) polymorphism in iPP. Prog. Polym Sci 1991, 16, 361.

7) polymorphism in polymer. Corradini et al. Adv. Polym. Sci. 1992, 100, 183.

8) Polymorphism, thermal properties and crystal stability of sPS and its blends. E. M. Woo et al. Prog. Polym Sci 2001, 26, 945.

9) Structure and physical properties of syndiotactic polypropylene: A highly rystalline thermoplastic elastomer. Claudio De Rosa, Finizia Auriemma. Prog. Polym. Sci. 31 (2006) 145¨C237.

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